amd64: Added Load and FrameAddr transformation. And fixed some corruption bugs w...

[libfirm] / ir / obstack / obstack_printf.c

diff --git a/ir/obstack/obstack_printf.c b/ir/obstack/obstack_printf.c
index 9d92092..eb5b86e 100644 (file)
--- a/ir/obstack/obstack_printf.c
+++ b/ir/obstack/obstack_printf.c
@@ -16,7 +16,9 @@ int obstack_vprintf(struct obstack *obst, const char *fmt, va_list ap)
        int     len;
 
        for (;;) {
-               len = vsnprintf(buffer, size, fmt, ap);
+               va_list tap;
+               va_copy(tap, ap);
+               len = vsnprintf(buffer, size, fmt, tap);
 
                /* snprintf should return -1 only in the error case, but older glibcs
                 * and probably other systems are buggy in this respect and return -1 if